Pen ring



FIG. 1 is a top plan view of a pen ring showing my new design with the cap removed;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a left side elevational view with the cap in place;

FIG. 7 is a right side elevational view of the capless ring in extended condition;

FIG. 8 is a rear end view of the cap alone; and

FIG. 9 is a front end view thereof. 

The ornamental design for a pen ring, substantially as shown and described. 